Common meaning:

Opposed to fascism.

Hidden meaning of the Equity religion: 

Opposing anyone who is against the Equity agenda.  

Discussion: 

From the perspective of Equity believers, the greatest threat to their religion is from people who refuse to accept the faith. This includes all people who do not believe in the religion of Equity no matter what their political views are. They sincerely think that everyone who is not an Equity believer is a fascist.

Many people would agree there are a small number of fascists in Western countries, but to label everyone as fascist unless they agree with Equity is a step too far.

According to the Equity believers, if you are on the political far right, the moderate right, the center, the moderate left, and even the far left and don’t agree with the Equity position, you are a fascist. Basically they want to eliminate everyone in society who does not agree with their religion. This is why they state that if you are not antifascist, then you are fascist. 

If you dare to question an Equity believer about anything, you will be immediately labeled as a fascist and an alt-right extremist. This makes sense from their perspective because they see any disagreement with the faith of Equity as violence and that makes you the enemy to be crushed.